New York New York
Allow me to put this into some perspective for you. This entire city was a "set". The universal backlot is made up of dozens of these mock environments. This one was a carbon copy of 1930's New York city but they also had an old west set and a European set and some newer ones like the one they used for War of the Worlds with the crashed 747. Of course these buildings are nothing more than plywood and fake brick paneling but they all looked totally authentic, except when you knocked on them and they made a hollow wooden sound.